Vertical toner streaks mar the printed page, as shown below.
Something could be caught between the photoconductor kit and the fuser. Check the paper path around the fuser entry and clear any debris.
If the streaks are in a repeating pattern, replace the photoconductor unit (PCU).
Try a different toner cartridge.
Inspect the fuser at its entry for debris.
If defect persists or should you not have a spare toner cartridge to test, contact Lexmark Technical Support.
Please contact Lexmark Technical Support if you need additional assistance.
NOTE: When calling for support, you will be asked for your machine/model type and serial number (SN). If you need help locating these.
Please call from near the printer in case the technician on the phone asks you to perform a task involving the printer.
LEGACY ID: SO6590